package com.wc.AlgoOJ_train.train1.c0.A004;

import java.util.Scanner;

/**
 * @Author congege
 * @Description 求绝对值
 * http://43.138.190.70:8888/p/A004
 * @Date Created in 2023/12/24-21:22
 */
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        while (sc.hasNextDouble()) {
            double num = sc.nextDouble();
            System.out.printf("%.2f\n",Math.abs(num));
        }
    }
}
